US2651675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural time constant circuits for noise immunity
Assignee: Avco Manufacturing Corp
•
Filing: 1950-06-08
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Granted: 1953-09-08
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Expires: 1970-06-08
Abstract
No abstract record available.
Inventors
- 👤 Francis A Wissel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:49
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/04; H04N5/08; H04N5/44; H04N5/52; H04N5/53
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2178736A
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US2219729A
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US2207775A
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US2332536A
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US2356141A
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US2495511A
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US2515597A
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US2472577A
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US2498839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |